2014年8月
Layered Salts with Iron Hexadecachlorophthalocyanine Anions - The Formation of [{FeCl16Pc}(2)](3-) Dimers Containing [(FeCl16Pc)-Cl-I(2-)](-) and Diamagnetic [(FeCl16Pc)-Cl-0(2-)](2-)
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
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- 巻
- 号
- 24
- 開始ページ
- 3863
- 終了ページ
- 3870
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1002/ejic.201400126
- 出版者・発行元
- WILEY-V C H VERLAG GMBH
Iron hexadecachlorophthalocyanine (Cl16Pc) salts with a layered arrangement of phthalocyanine (Pc) macrocycles were obtained by the reduction of FeCl16Pc with sodium fluorenone ketyl in the presence of PPNCl [PPN+: bis(triphenylphosphine) iminium cation] and TBABr (TBA(+): tetrabutylammonium cation). (PPN+)[((FeCl16Pc)-Cl-I)(-)]center dot 0.78C(6)H(4)Cl(2)center dot 0.22C(6)H(14) (1) contains pi-pi stacking columns formed by dimerized ((FeCl16Pc)-Cl-I)(-) anions. The side-by-side arrangement of neighboring columns results in the formation of a layered iron hexadecachlorophthalocyanine structure. (TBA(+))(3){[( FeCl16Pc)(2)](3-)} (2) contains hexagonal layers formed by [(FeCl16Pc)(2)](3-) dimers and separated by TBA(+) cations. The dimers bear -3 charge and, according to optical and X-ray diffraction data, consist of a [Fe-I(Cl16Pc)](-) monoanion and a [Fe-0(Cl16Pc)](2-) dianion. These anions are bonded in the dimer by a Fe-Fe bond of 2.899(4) angstrom length. It was shown that the negative charge in both anions is localized on the iron atoms to form Fe-I and Fe-0, respectively, and no electron transfer to the hexadecachlorophthalocyanine macrocycles is observed. Magnetic data indicate the presence of only one S = 1/2 spin per [(FeCl16Pc)(2)](3-) dimer. This result is in agreement with the formation of iron(I) and iron(0) hexadecachlorophthalocyanine anions, which have the iron atoms in d(7) and diamagnetic d(8) electron configuration, respectively. The spins of the iron(I) atoms are arranged in a hexagonal manner and only weakly interact, which results in a Weiss temperature of -1 K because of the long distances between them (> 18 angstrom). Previously studied anionic salts with a columnar arrangement of [ Fe-I(Cl16Pc)](-) do not show EPR signals from FeI. In contrast, salt 2 shows an intense EPR signal with main components at g(perpendicular to) = 2.249 and g(parallel to) = 1.989, which are characteristic of Fe-I with d(7) electron configuration.
- リンク情報
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- DOI
- https://doi.org/10.1002/ejic.201400126
- J-GLOBAL
- https://jglobal.jst.go.jp/detail?JGLOBAL_ID=201702201619463714
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000340940800011&DestApp=WOS_CPL
- URL
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84905735025&origin=inward
- ID情報
-
- DOI : 10.1002/ejic.201400126
- ISSN : 1434-1948
- eISSN : 1099-0682
- J-Global ID : 201702201619463714
- SCOPUS ID : 84905735025
- Web of Science ID : WOS:000340940800011